How to bind click events in js (detailed tutorial)

This article uses a piece of example code to explain to you the relevant knowledge of binding click events to the li collection of js index subscripts. The code is simple and easy to understand, very good, and has reference value. Friends who need it can refer to it

The following code introduces you to the li collection binding click event. The specific code is as follows:

//Method-1:
var items = document.getElementsByTagName('li');
　　for(var i=0;i<items.length;i++){
　　　　items[i].index = i;
　　　　items[i].onclick = function(){
　　　　　　this.innerHTML = this.index;
　　}
}
//Method-2:
var items = document.getElementsByTagName(&#39;li&#39;);
　　for(var i = 0; i<items.length; i++){
　　　　(function(index){
　　　　　　items[i].onclick = function(){
　　　　　　this.innerHTML = index;
　　　　}
　　})(i)
}
//Method-3:
var items = document.getElementsByTagName(&#39;li&#39;);
for(var i = 0; i<items.length; i++){
　　items[i].onclick = function(index){
　　　　return function(){
　　　　　　this.innerHTML = index;
　　　　}
　　}(i)
}

The above is what I compiled for you. I hope it will be helpful to you in the future.

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